What does apt's cache mean in the below defination?
apt-cache is a command to manipulate and obtain information from the packages at apt's cache.
I searched a lot on this.. I get that there are lot commands under apt-cache which help us in getting/searching packages. But apt's cache!! What does it mean??
APT downloads packages information (with apt-get update) and stores them in a local database located at /var/cache/apt. This way, APT doesn't have to download something from the Internet every time you want, for instance, to search for a package.
That local database is APT's cache.
Related
I want to use the package "Dask", but there is one problem.
"Dask dataframe requirements are not installed."
Obviously, we can use pip install "dask[dataframe]" or pip install "dask[complete]".
However, in the secured server where I work, there is no internet connection.
So, I transfer the file of package and install manually.
But, I cannot find the package dask[dataframe] for downloading.
How can I install the rest of packages manually without internet connection?
Thank you
You should look at the setup.py requirements file in the dask repository to see which dependencies it requires.
I do not know how to check for this via command line. I do know that you can do this for through the GUI; however, I want to implement this in my script. Anyone know how to do this? (I haven't found anything about this).
Ubuntu updates are managed through the apt package manager.
If you're looking to run daily updates you'll want to do something like:
sudo apt update # updates apt packages index
sudo apt upgrade # runs upgrades on all packages
I'm trying to install TeamViewer by going to their website and downloading the latest version. However, when I open a terminal, navigate to the folder, and enter
sudo dpkg -i teamviewer_13.0.6634_amd64.deb
I get a message that certain dependencies are missing, including qtdeclarative5-qtquick2-plugin. I then installed that, re-ran the install, and there are many other missing dependencies, so I try to just run
sudo apt install qtdeclarative5-*
and this tells me that several dependencies from qml are needed, so I run
sudo apt install qml-module-*
and this again tells me I first need other missing dependencies, and at this point I feel like I am in an endless maze. Is there any efficient way of getting the dependencies that I need? Or am I supposed to be doing something completely different to install TeamViewer? I'm running Linux Mint 18.3 Cinnamon.
Why not use VNC?
This is a question more relevant for ServerFault, Stack Overflow's sister site for IT.
So, with my .travis.yml, I'm installing some packages via apt-get which doesn't take too long to download, but a very long time to install.
Is there a way to make Travis CI remember the installed packages, so I won't have to install them from scratch for every build?
There seems to be no easy or convenient way to cache all of the packages you need to install via apt-get. According to the Caching Dependencies and Directories documentation, Travis CI currently only provides "convenience" caching for Bundler, CocoaPods, Yarn (and a few others).
However! If you can determine where apt-get installs each of the packages you need (as install locations vary from one package to the next), you can cache each of those install directories individually by following the steps in the Arbitrary directories documentation.
I hope this helps. Please let me know if you have any other questions and I'd be happy to help in any way I can. Cheers!
If the packages you need are in Travis' whitelist, you can install them more simply by adding to your .travis.yml:
addons:
apt:
packages:
- cmake
- package-xy
And cache them with:
cache:
apt: true
I have a maven built docker image that was dependent on libssl1.0.2_1.0.2d-3_amd64.deb, but this has now a 404 and has been replaced by libssl1.0.2_1.0.2e-1_amd64.deb.
This is a problem because maven builds are meant to be durable - ie you can rebuild them at any point in the future. The main maven repo is durable, so artefacts taken from that will be there in the future. I could move the debs I need into the maven repo, but that is a bit of abuse of other peoples storage...
So is there a durable store of debian files that is guaranteed to exist... well at least until the revolution/meteor strike/Jurassic resurrection etc.
You can do this yourself with free, open-source tools. You can create your own APT repository for storing Debian packages. If you are interested in using GPG signature to sign repository metadata read this.
Once you've created the repository, you can create a configuration file in /etc/apt/sources.list.d/ pointing to your repository. You can run apt-get update to refresh your systems apt cache, and then run apt-get install to install the package of your choice.
BTW, you can install a particular version of a package by running: apt-get install packagename=version.
For example, to install version 1.0 of "test", run: apt-get install test=1.0.
Alternatively, if you don't want to deal with any of this yourself you can just use packagecloud.io for hosting Debian, RPM, RubyGem, and Python PyPI repositories. A lot of people who use our service have your exact use case, where Debian packages they depend on disappear from public repositories so they upload them to us.